package com.sky.mapper;

import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface ShoppingCartMapper {
    //查询购物车
    ShoppingCart selectBy(ShoppingCart shoppingCart);
    //新增购物车
    @Insert("insert into shopping_cart (name, user_id, dish_id, setmeal_id, dish_flavor, number, amount, image, create_time) " +
            " values (#{name},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{number},#{amount},#{image},#{createTime})")
    void insert(ShoppingCart shoppingCart);
    //根据id更新购物车数量
    @Update("update shopping_cart set number = #{number} where id = #{id}")
    void update(ShoppingCart cart);
    //查看购物车
    @Select("select *from shopping_cart where user_id=#{currentId}")
    List<ShoppingCart> list(Long currentId);
    //清空购物车
    @Delete("delete from shopping_cart where user_id=#{currentId}")
    void clean(Long currentId);
    //删除购物车中的一个商品
    @Update("update shopping_cart set number=number-1 where dish_id=#{dishId}")
    void sub(ShoppingCartDTO shoppingCartDTO);
    //将商品移出购物车
    @Delete("delete from shopping_cart where dish_id=#{dishId}")
    void delete(Long dishId);
}
